[W100DEBA], Legal Testimony, Thomas Alva Edison, April 29th, 1881

Item

Abstract

"Preliminary statement of Edison Issue-- 'In a Sprengel Air Pump the Mercury supply tube having formed integral therewith a contraction above the fall tube for regulating the flow of mercury' I first employed this invention at Menlo Park New Jersey about and during the fall of 1878 using water as this exhausting agent. In the summer of 1879 I used it with mercury as the active agent. This was before said Bohm had visited Menlo Park or entered my employ."

Mentions

Date

1881-04-29

Decade

1880-1889

Identifier

W100DEBA

Folder Set

W100DEB

Title

[W100DEBA], Legal Testimony, Thomas Alva Edison, April 29th, 1881

Microfilm ID

Publisher

Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University